Press for the manufacture of goods made from paste, dough, and the like



I n. voN STEIGER. PRESS FOR THE MANUFACTURE 0F GOOQS MADE FROM PASTE, DOUGHl AND THE LIKE.

Patented Nov. 7, 1922.`

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Patented Nov. '7, 1922.

vunirse srarss ROBERT VONSTEC'rER, OF ROSENBERG, NEDER-UZ-it STTZRLAND,

THE FIRM: Guentinnn su inne, or Unwin, yswiss:aattirano.

iPRESS FOR THE MANUFACTURE F GOODS YIADE FRDM PiSTE, 3DG-UGH, AND TH.; i.

Application filed December 28, 1921. Serial No. 525,432.

ful Improvement in Presses for the Manufacture'of Goods Made from Paste, Doi'igh, and the like, oi`,which the@followingI is a specification. reference being had thereni to the accompanying drawing.

The ,invention relates to a press :for the manufacture of goods made from paste, dough and the like, in rwhich the material to be shaped is placed vinto a chamber and is subjected to pressure Jfrom aplungcr and squeezed through` apertures. Presses of this type are known in which an intermediate piece is` interposed between the pressure chamber andthe plate containing the mould apertures. When the pressure chamber swung out of itsyoperative position a layer oi the material remains above the mould disc in said intermediate piece whereby a rupture ot the goods is kprevented when the pressure chamber is swung into its inoperative position.'`

According to the present 'invention this intermediate piece is broadened towards the mould disc and is so constructed and held in operative position that'y a certain amount of movement in the axial direction relatively to other parts of the press is permitted and that by the action of the reaction or back pressurelof the dough under pressure said intermediate piece is caused to abut against stop means rigidly connected to other parte oit the press and is thussecuredin position. This construction permits of utilizing a large moulding disc and of attaining therefore a large output and of an easy and quicl., exchange of the mould disc.

Several embodiments of the invention shoWnvby way of example in the accompany` ing drawing, in which:

Fig. l is a vertical section through a press broadened e. its cross-section increases to Tards the disc and is so constructed 'that it can move soi'newh at relatively to the disc in the axial direction. its outer periphery the intermediate piece l is provided with projecting parts 5 which form in conjunction with stop lugs 6 of the press table a haj.'- onet joint'. lli/*hen the `interineuiate piece 4i has to be brought in position the latter is so turned that the projections 5 pass irough the interstices between the stop lugs' 6 and is then lowered so far that the upper 'faces kolE the projections 5 arebelow the. lower faces of the stop lugs 6. Thereupon the piece l is turned iritil :ritter the projections 5 and the stop lugs (3 coincide. lf now the pressure chamber and the intermediate piece are iilled with dough and pressure is applied to the latter the reactionor back pressure ol the dough lifts the intermediate piece and presses the pioiections 5 against the stop lugs 6 and rigidly secures the piece this position. l/llheai the application the pressure the reaction 'pressure ceases as well and the intermediate piece may easily be removed when tor instance the mould disc has to he exchanged.

The connection between the interpnediate piece Li and other parts of the press may be modilied in many ways. instead oi the hay onet joint a screw joint may be used as is shown in l f' 2. which screw joint is provided with a clearance between the screw threads 8 of the intermediate piece and the screw threads 9 ot the base. y

According to the construction illustrated in Figs. 3 and a a bipartite ring l() maj. be utilized, provided with internal danses that project over the intermediate piey Yll and over a collar l2 provided on the press table or base in order to eff connection. According to Fig. 5 l; may project over the iA l ntermediate piece la and over the moulding disc l5 instead'of over vintermediate piece and over the base asis shown in Fig. 3.

With all the constructionel examples shown it is' essential that, when no pressure is exerted by the press plunger. the inten mediate piece is free to move somewhat rel atively to the other parts of the press and that only a'fter'the reaction pressure oit the dough acts on said piece the latter is pressed against stop means which are lined to other parts of the press.

In order lo provide for a free movement that is not hindered it is advantageous in suchcases in which the intermediate piece projects over the mould disc to provide for some clearance betireen the inside diameter oi" theintermediate piece and the outside diameter et the mould disc. ln order to prei/'ent the dough from escaping through the annular gap present in this case and in the case in which the the mould disc abut against each other in the'manner shown in Fig. 5, it is advantageous to insert atightening ring 7 which can be designed in a known manner like the expanding tightening rings on pistons of steam engines er the like. v

An especially advantageous way of, attaching the intermediate pieces is illustrated in Fig, 6. In this constructional example the stop means against which the intermediate piece is pressed by the reaction pressure of the dough is formed by the loweredge of the pressure chamber. In this manner the intermediate piece is not only secured but the gap between the intermediate piece 16 and the pressure chamber 17 is closed. Thereby .'other constructional parts of the press such as the cylinders and pistons 18 (Fig. il adapted to press the pressure chamber against the inter-mediate piece during the working of the press in order to prevent an escape of the dough betweenk the intermediate piece and the pressure chamber are rdispensed with. The means for actuating the press are known as such and the press may be worked in the manner described in my copending application Ser. No. 498,707.

l claim:

l. ln a press of the type described, a pressure chamber adapted to take up the material to be expressec, a mould disc, an intermediate piece interposed between said pressure chamber and said mould disc and having a cross-section that `increases towards the mould disc, means y adapted to hold said intermediate piece in operative position which means permit of a small movement of the intermediate piece in the axial direction, and stop means on the press against which said intermediate piece is caused to abut by the reaction pressure ot' the material under pressure acting on the intermediate c piece.

intermediate nece andv Lacasse :2. in a press of the type described, a pressure chamber adapted to takeA up the material to be expressed, a mould disc, an intermediate piece interposed between said pressurev chamber and said mould disc and having a cross-section that increases towards the mould disc, means adapted to hold said intermediate piece in operative position which means permit of a small movement ot the intermediate piece in the 'al direction, stop means-on the press ainst, w iich said intermediate piece is ca sed to abut by the reaction pressure ot' the material under'pressure acting on the intermediatey piece, and means adaptedto prevent an escape of the compressed ma.- terial between the intermediate piece and mould disc.

ln a pressoi' the type described, a ie chamber adapted to take up the ial to be expressed, a mould disc, an intermediate piece interposed between said pressure chamber and saidrmould discand having a vcross-section that increases t- `wards the mould disc, means adapted to hold said intermediate piece in operative 1iositien which means permit of a small iovenrntot the intern'iediate piecefin 'the `l direction, stop means on the press ust `which said intermediate piece is to abut by the reaction pressure of 'ie material under pressureacting on the nteimediate piece, 4and an expanding ring ncontact with said intermediate piece and .said mould disc orpreventing an escape of the compressed material between said parts.

4l. in a press ot the type described, a pressure chamber adapted to take up -the material to be expressed, a mould disc.an

intermedi-ate piece interposedA between said pressure chamber and said mould disc and having cross-section thatl increases towards the mould disc, means adapted to hold said intermediate rpiece in operative positionand permit of a small movement of the intermediate piece in the axial direction, a facing on the lower edge of the pressure chamber, and a facing on `the upper edge of *be intermediate piece abutting against'said acing on the pressure chamber' by the reacP ion pressure of the material under pressure. in testimony whereof I aiiix my' signature.

sonner VON ermeeR. 

